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0_0_34898741_15260.cpp
0_0_34898741_15260.cpp(9) : error C2668: “pow”: 对重载函数的调用不明确
        VC2013\INCLUDE\math.h(1233): 可能是“long double pow(long double,int) throw()”
        VC2013\INCLUDE\math.h(1231): 或       “long double pow(long double,long double) throw()”
        VC2013\INCLUDE\math.h(1117): 或       “float pow(float,int) throw()”
        VC2013\INCLUDE\math.h(1115): 或       “float pow(float,float) throw()”
        VC2013\INCLUDE\math.h(1027): 或       “double pow(double,int) throw()”
        VC2013\INCLUDE\math.h(512): 或       “double pow(double,double)”
        尝试匹配参数列表“(int, int)”时
0_0_34898741_15260.cpp(13) : error C2065: “t”: 未声明的标识符
0_0_34898741_15260.cpp(13) : fatal error C1903: 无法从以前的错误中恢复；正在停止编译